id:A022916 - OEIS Search Results

Search: id:A022916

Displaying 1-1 of 1 results found.

page 1

Multinomial coefficient n!/([n/3]![(n+1)/3]![(n+2)/3]!).

+0
3

1, 1, 2, 6, 12, 30, 90, 210, 560, 1680, 4200, 11550, 34650, 90090, 252252, 756756, 2018016, 5717712, 17153136, 46558512, 133024320, 399072960, 1097450640, 3155170590, 9465511770, 26293088250, 75957810500, 227873431500 (list; graph; listen)

	OFFSET	`0,3`
	PROGRAM	`(PARI) a(n)=n!/((n\3)!((n+1)\3)!((n+2)\3)!)` `(PARI) {a(n)= if(n<0, 0, n!/(n\3)!/((n+1)\3)!/((n+2)\3)!)} /* Michael Somos Jun 20 2007 */`
	CROSSREFS	`A006480(n) = A022916(3*n).` `Sequence in context: A129912 A032177 A095349 this_sequence A073949 A080372 A000650` `Adjacent sequences: A022913 A022914 A022915 this_sequence A022917 A022918 A022919`
	KEYWORD	`nonn,easy,nice`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`
	EXTENSIONS	`Corrected by Michael Somos, Jun 20 2007`

page 1

Search completed in 0.002 seconds

Last modified July 25 02:12 EDT 2008. Contains 142294 sequences.

AT&T Labs Research